Retrodental synovial cyst which disappeared after posterior C1-C2 fusion: A case report.

Ito, Tomokazu; Hayashi, Masahiro; Ogino, Toshihiko · J Orthop Surg (Hong Kong) · 2000

case_report · Level V

Where this comes from

Abstract

Synovial cysts of the cervical spine are extremely rare. We describe an 8-year-old boy with atlantoaxial subluxation and hypoplasia of the dens. Magnetic resonance imaging showed a round lesion, posterior to the odontoid process. This mass was characterized by a low signal intensity on T1-weighted images, and high signal intensity on T2-weighted images. The retrodental synovial cyst disappeared after posterior atlantoaxial arthrodesis.